<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>计算1到100个数相加和</title>
</head>
<body>
    <script>
        function getSum(){
            var sum = 0;
            for(var i = 1; i <=100;i++){
            sum += i;
            }
            document.write('1到100个数相加和是:' + sum);
        }
        getSum();
    </script>
</body>
</html>